Entry
The disclosure of the daguerreotype — The joint session of the two Academies, 1839
The State having bought the rights to the process in exchange for life pensions, an astronomer set out its technical detail before the Academy of Sciences and the Academy of Fine Arts sitting together, and France made a gift of it to the world. Seven months earlier the same man had announced that the process existed without saying what it was. (Editorial synthesis)
The disclosure of the daguerreotype took place on 19 August 1839. (source: Encyclopædia Universalis)
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